Potato Cakes with Smoked Salmon

I've done many versions of potato pancakes, in my life, but this has got to be the easiest. I think I shocked myself by making it with smash/potato flakes (this is the correct terminology for instant mashed potato granules), but there's always got to be a first time. And they taste wonderful, so there is no need to feel bad. But if having an ingredient like this in your store or cupboard makes you feel too trailer-trash for words, then go to some expensive health store and buy a packet of organic potato flakes instead. I do understand. I have to tell you that if you make these with 1 cup potato flakes and no flour or baking powder, you have the most stodgily fabulous squat little cakes to eat with a proper fried breakfast. These are mighty good for soaking up excess, though delicious, fats and juices though a more elegant version is required here. Serve them around at cocktail parties or lay out the component parts, adding a little bowl of creme fraiche, sour cream or smetana, on the table for an appetizer.